.main {
  display: flex;
  height: 650px;
  border: 1px solid white;
  margin-left: 20px;
  margin-right: 20px;
  text-align: center;
  font-size: 20px;
}
.left {
  flex: 1 1 200px;
  border: 1px solid white;
}
.center {
  flex: 1 1 200px;
  border: 1px solid white;
  border-radius: 20px;
  background: url(img.png);
  background-repeat: no-repeat;
  background-position-x: 40%;
  background-color: rgb(236,89,71);
}
.right {
  flex: 1 1 200px;
  border: 1px solid white;
}
.biaozhun {
  color:white;
}
.free1 {
  font-size: 40px;
  margin-top: 80px;
}
.biaozhun1 {
  font-size: 40px;
  margin-top: 80px;
}
.gaoji1 {
  font-size: 40px;
  margin-top: 80px;
}
.free3 {
  border: 1px solid black;
  border-radius: 20px;
  font-size: 40px;
  width: 200px;
  margin-left: 120px;
  margin-right: 120px;
}
.free3:hover{
  background: blue;
  color:red;
  box-shadow: 2px 2px;
}
.biaozhun3 {
  border: 1px solid orange;
  border-radius: 20px;
  background-color: orange;
  font-size: 40px;
  width: 200px;
  margin-left: 120px;
  margin-right: 120px;
}
.biaozhun3:hover{
  background: blue;
  color:red;
  box-shadow: 2px 2px;
}
.gaoji3 {
  border: 1px solid black;
  border-radius: 20px;
  font-size: 40px;
  width: 200px;
  margin-left: 120px;
  margin-right: 120px;
}
.gaoji3:hover{
  background: blue;
  color:red;
  box-shadow: 2px 2px;
}
.span1 {
  font-size: 40px;
}
.span2 {
  font-size: 40px;
  color: red;
}
.span4 {
  font-size: 40px;
}